package w9;

public class Example8_2 {
	public static void main(String args[]) {
		String s1, s2;
		s1 = new String("天道酬勤");
		s2 = new String("天道酬勤");
		System.out.println(s1);
		System.out.println(s2);
		System.out.println("二者的实体相同吗：" + s1.equals(s2)); // true
		int addressS1 = System.identityHashCode(s1);
		int addressS2 = System.identityHashCode(s2);
		System.out.printf("String对象s1和s2的引用分别是%x,%x\n", addressS1, addressS2);
		System.out.printf("二者的引用相同吗：%b\n", s1 == s2); // false
		String s3, s4;
		s3 = "we are students";
		s4 = new String("we are students");
		System.out.println(s3);
		System.out.println(s4);
		System.out.println("二者的实体相同吗：" + s3.equals(s4));// true
		int addressS3 = System.identityHashCode(s3);
		int addressS4 = System.identityHashCode(s4);
		System.out.printf("String对象s3和s4的引用分别是%x,%x\n", addressS3, addressS4);
		System.out.printf("二者的引用相同吗：%b\n", s3 == s4); // false
		String s5, s6;
		s5 = "勇者无敌";
		s6 = "勇者无敌";
		System.out.println(s5);
		System.out.println(s6);
		System.out.println("二者的实体相同吗：" + s5.equals(s6)); // true
		int addressS5 = System.identityHashCode(s5);
		int addressS6 = System.identityHashCode(s6);
		System.out.printf("String对象s5和s6的引用分别是%x,%x\n", addressS5, addressS6);
		System.out.printf("二者的引用相同吗：%b\n", s5 == s6);// true
	}
}
